anchor all {
  anchor in all {
    pass quick all flags S/SA keep state
  }
  anchor out all {
    anchor in all {
      anchor out all {
        anchor in all {
          anchor out all {
            anchor in all {
              anchor out all {
                anchor in all {
                  pass all flags S/SA keep state
                }
              }
            }
          }
        }
      }
    }
  }
  pass in on tun1000000 all flags S/SA keep state
  anchor "foo" on tun1000000 all {
    pass all flags S/SA keep state
  }
}